It's not that sophisticated. It's a picture of a baby being taken at a hospital. There's probably hundreds of photos of babies being taken with GPS from that

It's not that sophisticated. It's a picture of a baby being taken at a hospital. There's probably hundreds of photos of babies being taken with GPS from that hosptial. FB image recognition probably thinks all these babies are the same "person". Then a separate system comes along and takes photos that do not have location info and tries to match them up with ones that do. It finds a match with the "hospital baby" and then asks for verification. Person says YES and it adds that baby to the "hospital baby" pool as well.